(Unicode C) multipart/form-data HTTP POST

Demonstrates how to construct and send a multipart/form-data HTTP POST.

For more information, see https://chilkatsoft.com/http_multipart_form_data_post.asp

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#include <C_CkHttpRequestW.h>
#include <C_CkBinDataW.h>
#include <C_CkHttpW.h>
#include <C_CkHttpResponseW.h>

void ChilkatSample(void)
    {
    HCkHttpRequestW req;
    HCkBinDataW bd;
    BOOL success;
    HCkHttpW http;
    HCkHttpResponseW resp;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Sends the following multipart/form-data POST:

    // POST /xyz/something HTTP/1.1
    // Host: domain
    // Content-Type: multipart/form-data; boundary=------------090708030009010000030901
    // Content-Length: 2220
    // 
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="param1"
    // 
    // value1
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="param2"
    // 
    // value2
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="starfish20"; filename="starfish20.jpg"
    // Content-Type: image/jpeg
    // 
    // JPEG DATA HERE...
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="helloWorld"; filename="helloWorld.pdf"
    // Content-Type: application/pdf
    // 
    // PDF DATA HERE...
    // --------------090708030009010000030901
    // Content-Disposition: form-data; name="tinyA"; filename="tinyA.xml"
    // Content-Type: text/xml
    // 
    // XML DATA HERE...
    // --------------090708030009010000030901--
    // 

    req = CkHttpRequestW_Create();
    CkHttpRequestW_putHttpVerb(req,L"POST");
    CkHttpRequestW_putContentType(req,L"multipart/form-data");
    CkHttpRequestW_putPath(req,L"/xyz/something");

    CkHttpRequestW_AddParam(req,L"param1",L"value1");
    CkHttpRequestW_AddParam(req,L"param2",L"value2");

    // Add some small files to the request. (Small so we can see what the full request looks like without too much data..)
    bd = CkBinDataW_Create();
    success = CkBinDataW_LoadFile(bd,L"qa_data/jpg/starfish20.jpg");
    CkHttpRequestW_AddBdForUpload(req,L"starfish20",L"starfish20.jpg",bd,L"image/jpeg");

    success = CkBinDataW_LoadFile(bd,L"qa_data/pdf/helloWorld.pdf");
    CkHttpRequestW_AddBdForUpload(req,L"helloWorld",L"helloWorld.pdf",bd,L"application/pdf");

    success = CkBinDataW_LoadFile(bd,L"qa_data/xml/tinyA.xml");
    CkHttpRequestW_AddBdForUpload(req,L"tinyA",L"tinyA.xml",bd,L"text/xml");

    http = CkHttpW_Create();

    resp = CkHttpW_SynchronousRequest(http,L"example.com",443,TRUE,req);
    if (CkHttpW_getLastMethodSuccess(http) != TRUE) {
        wprintf(L"%s\n",CkHttpW_lastErrorText(http));
        CkHttpRequestW_Dispose(req);
        CkBinDataW_Dispose(bd);
        CkHttpW_Dispose(http);
        return;
    }

    wprintf(L"HTTP response status: %d\n",CkHttpResponseW_getStatusCode(resp));

    wprintf(L"Received:\n");
    wprintf(L"%s\n",CkHttpResponseW_bodyStr(resp));

    CkHttpResponseW_Dispose(resp);


    CkHttpRequestW_Dispose(req);
    CkBinDataW_Dispose(bd);
    CkHttpW_Dispose(http);

    }